Fireplace



June 21, 1938. 1w. HOLA-z 2,120,977

FIREBLACE I l Filed June 30, 1957 2 Sheets-sheet 1 al 4f June 21, 1938-.

.1.4 w. HoLz FIREPLACE Filed June 30, 19:57

' 2 sheets-sheet 2 Patented June Z1, 1938 UNITED STATES PATENT OFFICE 8 Claims.

This invention relates 'to a replaoe and more particularly to a construction and arrangement for heating the air by means of the heat within the fireplace and causing the air to circulate within the room into which the fireplace opens. An object of the invention is to provide a simple construction wherein air is vdrawn from the lower part of the vroom into which the fireplace opens and is circulated in contact with the fm heated Walls of the fireplace-and then discharged into a higher room level to cause a circulation of air within the roomand to heat the air so circulated. l

A further object is to provide simple and ef- 157 iicient means for the purpose including a motor (driven `fan or `blower and providing conduits through which the air is forced by the blower, `cool a-ir -being taken in adjacent the floor level of the room,lcirculated through the conduit or con- 20 "duits extending adjacent the fireplace where the f air is heated and then discharged lfrom the `conduit fat a point elevated above the inlet. It is =a1so an object to provide an arrangement of con- Iduits having discharge ends openingy in opposite 25 directions within `a tubular member extending across the liuc vfor the fireplace whereby the air within thetubular member is heated by the hot products of combustion passing up the flue and a lcirculationof vair vis set up through said tubular '-30 Tnember.

A furtherobject is to provide an arrangement whereby -air is drawn in adjacent the `floor level at each side of -the fireplace and is conducted from each side ofthe fireplace upwardly and "35 across the upper side of the replace and discharged at a level adjacent the upper part of the fireplace. vIt is also an object to provide certain other new and useful features in the construc- "tion, arrangement and combination of parts, all 40 `as hereinafter more fully `set forth, reference be- -ing had to the 'accompanying drawings wherein,

Figure 1 is alfront elevationof a fireplace illflustra'tive of an embodiment of the present iny vention and showing 'portions broken away and "45 in section to'more clearly disclose the construction;

vFig. 2 is 'a horizontal section substantially upon the liner2-2 of'Fig. 1

Fig. 3 is an end elevation of the fireplace show- -inga section throughthe adjacent wall substan- "lti'allyupon-the line1-3-3 of Fig. 1;

.FigA is a -vertical transverse `section substan- 4ftially vupon the linei=44 of Fig. vl; y

Vigf iis 1a transverse section substantially `upon f'the line 25-5 of Fig. il; l

Fig. 6 is a sectional detail substantially upon the :line 6-6 of Fig. l, and

Fig. 7 is a sectional side elevation of a flexible conduitfor the circulated air.

As shown in the accompanying drawings, .I `in- 5 dicates a'brick wall of a building and 2 the projecting brick fireplace. This fireplace has the usual rectangular opening '3 which opens direct- `ly into `the room of the building and leading from duit 6 andthe adjacent ends of these air pipes L20 l are flattened somewhat as shown at 8 in Figs. 2 and 5, forming end portions which are of oval shape in cross section and the adjacent ends 9 of these pipes 1 are beveled asat I0 and arranged 'in overlapping relation, or side by side within 25 the large conduit 6 which extends across the smoke flue 5 of the fireplace, with its end portions extended laterally of the'replaceand opening through the end walls of the fireplace to provide outlets for the air through grills AII 30 mounted over the outlet ends of `the conduit 16. To the ends of the air pipes I'I are connected vertical air conduits -I2 which lead downwardly at each lend of the fireplace for connection with blowers I3 located within `suitable chambers I4 A135 in the end walls of the fireplace. A suitable motor I5 is provided within each chamber I54 for driving therblowers I3, and each of these chambers I4 is lopen through the rend walll of 4the fireplace to provide air inlets adjacent the floor level, these 40 air inlets being covered each by a grill I'6.

The air conduits `I2 which lead from the blowers upwardly and are connected at their upper `ends to Vthe downturned ends of the air pipes "I,

are `connected at their lower ends to the `outlets i415 of the blowers and are preferably constructed as shown in Fig. 7, they being more or less 'exible and *having a comparatively thick wall which is adapted to `dissipate the Vibrations and 4sounds set up bythe motors I5 and blowers 113. The w50 conduit pipes I2 may be of any suitable form of `construction but as shown in Fig. "7 Vthey each -comprise a comparatively thiclrwall I1 Iof suitfzable brous Aor othermaterial which is-supported l-within, by -an inner 'supporting "-wall 418, such :as w55 screen wire or other suitable flexible material so that vibrations set up by the running of the blowers and motors, will not be transmitted upwardly to the pipes 1 and the noise of such running will be more or less deadened.

Suitable leading-in electrical conduits indicated at I9 are embedded within the fireplace wall for conducting current to the motors l5 and within this electrical conduit is located a suitable switch 2D in each end wall of the replace adjacent to and just above the grills I6 where they may be conveniently operated for turning on the current to drive the motors and thus operate the blowers I3 to draw in air through the grill I6 adjacent the room floor and force it upwardly through the conduits l2 into the ends of the two pipes or conduits 1 from which it will be discharged through the contracted ends 9 of these pipes and directed in opposite directions toward the open or discharge ends of the conduit 6 and out through the grills Il at a level near the upper end of the fireplace and at a considerable distance above the iioor level.

Therefore when these blowers are operating, the blower .at one end of the fireplace will draw in air from adjacent the floor and force it up through the conduit l2 into one end of the pipe 1, discharge it under pressure from the discharge end of this pipe and toward the opposite end of the fireplace, the air being heated as it passes through the pipe 1 intothe conduit 6 and will then be forced out through the outlet Aend of said conduit s at the end of the repiace opposite that in which the inlet is located. This conduit 6 extending across the fireplace flue 5 and from end to end of the fireplace in a horizontal plane, is dire'ctly contacted by the products of combustion from the fireplace passing through the fiue 5 and the conduit 6 is much greater in diameter than the diameter of either of the pipes 'l to provide for expansion of the air within said conduit 6 as it issues from the overlapped ends 9 of the pipes '1. The air thus forced through the pipes 1 from the blowers at opposite ends of the fireplace, is thus directed toward opposite ends of the conduit 6 so that the air entering at one end of thel fireplace is discharged at the opposite end and at a higher level than the intake. A circulation of air is thus set up within the room, the air being drawn from adjacent the floor level, circulates .across the fireplace above the burning fuel where it is heated thereby and then discharged into the room at the opposite end of the fireplace and at a higher level so that it will heat the upper part of the room, circulate into the remote corners of the room and be returned along the fioor into the inlets I6.

As shown particularly in Fig. 5, the conduit ii is elevated transversely in a vertical direction, thus providing increased space between the upper and lower walls of the conduit 6 and the pipes 1 and within this space below the pipes 7, water may be placed to add moisture to the air ejected from the ends of said conduit, the bottom wall of the ends of this conduit 6 being inclined upwardly so that the water will be retained within the conduit at its lower side, the conduit thus forming a water pan to hold water which will be heated sufficiently to add moisture to the air ejected from the ends of the conduit.

In installing the present invention `within a small fireplace, but one blower and motor may be employed and but one pipe 'I which will open into the conduit 6 and discharge the air at the opposite end of the fireplace. Obviouslyother changes may be made in the particular construe tion and arrangement of parts, within the scope of the present invention, without departing from the spirit thereof and such changes are contemplated.

Having thus fully described my invention what I claim is:

1. A replace having an open front lire chamber and a flue leading therefrom, and including a tubular member mounted within the walls of the fireplace and extending transversely across said fiue and arranged to discharge heated air through an opening in an end wall of the iireplace, a conduit extending into said tubular member and arranged to discharge air toward said opening and extending downwardly within an end wall of the fireplace to an inlet opening in said end adjacent the floor level and at the end of the fireplace opposite that through which the transversely disposed tubular member discharges.

2. In a fireplace including a fire chamber opening through the front of the fireplace and having a iiue for the products of combustion leading upwardly therefrom, a tubular member supported within the end walls of the fireplace and extending horizontally across the fireplace and across said flue, said tubular member opening through an end wall of the fireplace, an air conduit opening into said tubular member and extending downwardly at an end of the fireplace opposite that through which the tubular member opens and operative to draw air through an inlet opening adjacent the lower end of said conduit and adjacent the room floor, and means within the end wall of the fireplace for drawing air into the air inlet opening and forcing it into said conduit and into said tubular member extending across the fireplace and across the iiue leading from the fire chamber of the fireplace.

3. In a fireplace having a fire chamber opening through the forward side of the fireplace, and a fiue leading from said chamber upwardly for conducting away products of combustion; a tubular member mounted within the walls of the fireplace above said fire chamber and extending from end to end of the replace and opening through the end walls thereof, means within the end walls of the fireplace adjacent the floor level for drawing in air, and tubes for conducting the air from said means upwardly at each end of the fire- Place .and into said transverse tubular member for discharge through the open ends thereof.

4. In combination with a fireplace having a fire chamber opening through thefront wall of the fireplace and provided with an upwardly extending flue for the discharge of products of combustion, of a tubular member extending transversely across said flue from end to end of said fireplace and opening at its ends through the end walls thereof, a chamber within each end wall of the fireplace adjacent the oor level and having an air inlet, and an air conduit extending upwardly from each chamber and opening into said horizontally disposed tubular member for conducting air from said air inlets in each end wall of the fireplace and upwardly into said tubular member and across said fiue and out through the ends of said tubular member at the ends of said fireplace.

5. In a fireplace having a fire chamber opening through the front wall of said replace and a iiue extending upwardlyfrom said chamber for conducting away products of combustion, of a horizontally disposed tubular member extending across the fireplace from endto end thereof and across the flue, the ends of said tubular member opening through the end walls of the fireplace, a chamber in each end wall of the replace adjacent the iloor level and each having an air inlet adjacent the Iioor level, means within each chamber for drawing in air through the air inlet thereof and forcing the same upwardly into said tubular member, and tubes within said tubular member extending longitudinally thereof and into which the air is forced, said tubes having overlapping adjacent ends to discharge the air therefrom in opposite directions through opposite ends of said tubular member.

6. In a replace having a fire chamber open#- ing through the front wall of the fireplace and a flue extending upwardly from the re chamber to conduct away products of combustion; a tubular member mounted within the structure of the fireplace and extending in a horizontal direction across said flue and above said fire chamber with its ends opening through the end walls of the fireplace, blowers one located within each end wall of the fireplace adjacent the oor level for drawing in air through air inlets at the ends of said replace, an air conduit leading upwardly from each blower, a tube connected to each of said air conduits and extending into said tubular kmember and longitudinally thereof with the adjacent ends of said tubes overlapping and directed toward opposite ends of said tubularV member for discharging air into said tubular member and toward the opposite open ends thereof, said portions of said tubes within said tubular member being of oval form in cross section with their adjacent overlapped end portions extending side by side Within said tubular member.

7. In a fireplace having a fire chamber opencent the floor level, a blower within each chamy ber, a motor within each chamber for driving the blowers, a tubular member attached at its lower end to the discharge end of said blower and extending upwardly within the end walls of the fireplace to adjacent said transverse tubular member, said tubular members the lower ends of which are connected to said blowers being flexible to effect the deadening of vibrations and sound of the blower and motor, and tubes extending longitudinally within the horizontally disposed tubular' member and connected to the upper ends of said flexible tubes with their adjacent ends in overlapping relation to discharge air therefrom longitudinally of the tubular member in opposite directions towards opposite ends thereof.

8. A fireplace as characterized in claim 1, and wherein the tubular member is elongated transversely in a vertical direction to provide a space within its lower side below the conduit extending into the tube, to provide a water space within the tube at its lower side to retain water to be evaporated by heat and add moisture to air ejected from the end of the tube.

JOI-IN W. HOLZ. 

